Gaussian Pyramid. Slides from Alexei Efros. Sampling. Good sampling: Sample often or, Sample wisely. Bad sampling: see aliasing in action!. Gaussian pre-filtering. G 1/8. G 1/4. Gaussian 1/2. Solution: filter the image, then subsample
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Slides from Alexei Efros
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1/8 (4x zoom)
Why does this look so crufty?
A bar in the big images is a hair on the zebra’s nose; in smaller images, a stripe; in the smallest, the animal’s nose
Figure from David Forsyth
is similar to Gaussian